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Conferences

Novel, All-Digital Phase Measurement System for Time Scales

Author(s)
Stefania Romisch, Thomas E. Parker, Steven R. Jefferts
A novel, all-digital phase measurement system, to be utilized as part of the NIST Time Scale at NIST in Boulder, CO is presented. The system is used to compare...

Two-Way Satellite Time and Frequency Transfer Using 1 MChip/S codes

Author(s)
Victor S. Zhang, Thomas E. Parker, Demetrios Matsakis, Joseph Achkar, Daniele Rovera, Dirk Piester, Andreas Bauch, Luca Lorini
The Ku-band transatlantic and Europe to Europe two-way satellite time and frequency transfer (TWSTFT) operations used the 2.5 MChip/s pseudo-random codes with 3...

Phase-lock Loops in Vibration Environments

Author(s)
Archita Hati, Craig W. Nelson, David A. Howe
A popular scheme for achieving low phase noise across a large range of offset frequencies is to employ an oscillator at an output frequency with low far-from...

Progress on a Portable Rubidium Fountain Frequency Standard

Author(s)
Paul D. Kunz, Thomas P. Heavner, Steven R. Jefferts
We are developing a transportable laser-cooled rubidium (Rb) atomic fountain frequency standard. We have a complete optical package, and have recently shown...

Limits on GPS Carrier Phase Time Transfer

Author(s)
Marc A. Weiss
The stability of differential delays between Global Navigation Satellite receivers is critical for time and frequency transfer. We study the limit of this...

A DATA FLOW IMPLEMENTATION OF AGENT-BASED DISTRIBUTED GRAPH SEARCH

Author(s)
Imad Hamchi, Mathieu Hoarau, Antoine Fillinger, Nicolas Crouzier, Lukas Diduch, Martial Michel, Vincent M. Stanford
Biological ants organize themselves into forager groups that converge to shortest paths to and from food sources. This has motivated development a large class...

A proposed global atmospheric monitoring networkbased on standard stars

Author(s)
Gerald T. Fraser, Steven W. Brown, Keith R. Lykke, John T. McGraw, Allan W. Smith, John T. Woodward IV, Peter C. Zimmer, Christopher W. Stubbs
The feasibility of developing a network of telescopes to monitor the composition of the nighttime atmosphere using stellar spectrophotometry is explored...

A Novel Wafer-plane Dosimeter for EUV Lithography

Author(s)
Steven E. Grantham, Charles S. Tarrio
Extreme Ultraviolet Lithography (EUVL) incorporates 13.5 nm light for patterning wafers and requires in-situ wafer-plane dosimetry that can be tailored to the...

Uncooled, Millimeter-Scale Atomic Magnetometers with Femtotesla Sensitivity

Author(s)
John E. Kitching, Svenja A. Knappe, William C. Griffith, Jan Preusser, V Gerginov, Peter D. Schwindt, Vishal Shah, Ricardo Jimenez Martinez
We summarize recent results at NIST to develop high-performance yet highly miniaturized magnetic sensors based on atomic vapors confined in microfabricated...

Creating a web-scale video collection for research

Author(s)
Paul D. Over, George M. Awad, Alan Smeaton, Colum Foley, James Lanagan
This paper begins by considering a number of important design questions for a web-scale, widely available, multimedia test collection intended to support long...

Towards a Global Interoperability Test Bed for eBusiness Systems

Author(s)
Nenad Ivezic, Hyunbo Cho, Jungyub Woo, Jun H. Shin, Jaewook Kim, Mohammad Abidi, Asuman Dogac, Tuncay Namli, Christine Legner, Francois Fischer
We describe an initial effort to create a comprehensive and coherent framework for feasibility analysis of the Global Interoperability Test Bed for eBusiness...

Fire Spread and Growth on Flexible Polyurethane Foam

Author(s)
William M. Pitts, Gregory Hasapis, Patrick Macatangga
A series of experiments designed to characterize fire spread and growth on flat samples of commercial non-fire-retarded flexible polyurethane foam have been...
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